#include<linux/kernel.h>
#include<linux/module.h>
#include<linux/init.h>

#define DRIVER_AUTHOR "shang chao"
#define DRIVER_DESC "a demo driver"


static int __init hello_4_init(void){
    printk(KERN_INFO "hello,world 4\n");
    return 0;
}

static void __exit hello_4_exit(void){
    printk(KERN_INFO "goodbye 4");
}

module_init(hello_4_init);
module_exit(hello_4_exit);


MODULE_LICENSE("GPL");
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_SUPPORTED_DEVICE("testdevice");